<script setup>
const arr = ["box1", "box2", "box3"];
const arr2 = [{ box1: true }, { box2: false }, { box3: true }];
const style = {
  color: "red",
  backgroundColor: "#bfa",
};
</script>
<template>
  <h1 class="header">我爱Vue</h1>
  <div :class="arr2" :style="style">我是div</div>
</template>
<style scoped>
.header {
  background-color: orange;
}
</style>
